I recently purchases an upgrade license for Adobe Flash Builder 4.7. The installer accepts my new serial number but then indicates a qualifying product cannot be found to upgrade. It allows me to specify Adobe Flash Builder 4 Standard, and enter my old serial number, but subsequently rejects it with the following error message.

"This serial number is not for a qualifying product. Please try another."

I have tried live chat support multiple times only to be told it is not available. I have a valid licesene, so how do I get around this problem?

Note: It does this regardless of whether I try to install cleanly or on top of my older version.